Schools are the problem. Hear me out.

Schools group together only one age of kid for socialization and only 20-30 of them. If your kid is not into the same thing as enough of the other kids in that group, they will likely be ostracized, even unintentionally. So you must let your kid do the things their friends do.

Broader society does not restrict the age of who you can socialize with. My friends vary in age quite a bit. My friend's kid can play with my kid despite being a different age, but that's much less than the 30 hours a week spent in school.

If the all class plays Fortnite and that is the only way they get socialized, his parents should consider moving him to another school. Many kids don't play this kind of stuff and actually prefer hanging out.

This kind of approach is also invalid. So what everyone plays Fortnite? There are many places to get socialized with other kids. The kid likes basketball? Sign him up to a basketball team; he likes to play music? Sign him to some band; etc. Kids shouldn't surrender to peer pressure.

I agree schools are also a problem, but not the main problem.

See last week's thread on why more parents homeschool.